GitLab

Before:
https://screenshot.googleplex.com/FJyL5zborbs
https://screenshot.googleplex.com/ADhhbeZN1Ee
After:
https://screenshot.googleplex.com/ef9cyxjNxQQ
https://screenshot.googleplex.com/c6MGGiOOhFv

The real change is from Base -> PS1. After that, most of the change is
moving a function from private to public to expose it.

Test: manual
Bug: 1011973
Change-Id: I7bb2aab1440a8c1e8db16c81ea2b038b1481db6e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1872761
Commit-Queue: Sammie Quon <sammiequon@chromium.org>
Reviewed-by: Xiaoqian Dai <xdai@chromium.org>
Cr-Commit-Position: refs/heads/master@{#708238}